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st: heckman model
From
"[email protected]" <[email protected]>
To
[email protected]
Subject
st: heckman model
Date
Mon, 17 Jan 2011 15:37:36 +0100 (CET)
Dear Stata users,
I have a doubt regarding the Heckman procedure (heckman command).
Why is the estimate of rho different than the estimated coefficient of
lambda? Is rho here defined as the correlation coefficient between the
estimated residuals of the two equations?
Thanks a lot,
Andrea
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